Those who tried to find Scott Alexander's real name could find it.
But those who tried to find information about their doctor or colleague Scott Siskind most likely wouldn't find out that he writes a popular blog.
There existed a trivial mapping of A -> B. There did not exist a trivial mapping of B -> A. Scott was trying to prevent his patients, who had information B, from being bombarded with the link to A. It is not a hard concept to grasp.
What a facile justification. By that metric there was nothing wrong with Gawker's antics. The question is always whether the things a journalist is publicizing in the public interest, and the fact that publications (especially prestigious ones) have an obligation to consider the impact of what they expose of citizens who often don't have an equal platform from which to defend themselves.
The very fact that you can find his real name from his pseudonym means that the NYT wasn't actually "exposing" anything of value. At the same time, they've made it considerably harder (if not impossible) for him to practice normal psychiatric medicine.
Also, does this article even cover what it was originally supposed to be about - i.e. a bunch of people online who saw COVID coming long before the authorities? I haven't gone all the way through, but my understanding is no. Instead there's no so subtle implication that the guy who wrote the "Anti Neoreactionary FAQ" may in fact a secret nazi or something.
This isn’t what he asked for. As you note there’s pages of comments and Alexander’s own account on Substack now. Maybe you’re claiming he isn’t being honest about his requests from NYT.